forked to background, child pid 192 no interfaces have a carrier Starting sshd: OK syzkaller syzkaller login: [ 12.665369][ T22] kauditd_printk_skb: 60 callbacks suppressed [ 12.665376][ T22] audit: type=1400 audit(1645817811.970:71): avc: denied { transition } for pid=265 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.669740][ T22] audit: type=1400 audit(1645817811.970:72): avc: denied { write } for pid=265 comm="sh" path="pipe:[10554]" dev="pipefs" ino=10554 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 Warning: Permanently added '10.128.10.56' (ECDSA) to the list of known hosts. executing program [ 18.983556][ T22] audit: type=1400 audit(1645817818.280:73): avc: denied { execmem } for pid=298 comm="syz-executor255" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.984736][ T298] incfs: Backing dir is not set, filesystem can't be mounted. [ 18.986689][ T22] audit: type=1400 audit(1645817818.280:74): avc: denied { mounton } for pid=298 comm="syz-executor255" path="/root/file0" dev="sda1" ino=1137 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 18.988076][ T298] kasan: CONFIG_KASAN_INLINE enabled [ 18.991507][ T22] audit: type=1400 audit(1645817818.280:75): avc: denied { mount } for pid=298 comm="syz-executor255" name="/" dev="devtmpfs" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=filesystem permissive=1 [ 18.991809][ T298] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 18.995177][ T22] audit: type=1400 audit(1645817818.280:76): avc: denied { mounton } for pid=298 comm="syz-executor255" path="/root/file0" dev="devtmpfs" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=dir permissive=1 [ 18.996273][ T298] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 19.000474][ T298] CPU: 1 PID: 298 Comm: syz-executor255 Not tainted 5.4.161-syzkaller-00025-g961dd91cc692 #0 [ 19.001946][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.003323][ T298] RIP: 0010:incfs_kill_sb+0x47/0xe0 [ 19.006172][ T298] Code: 9e f0 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 68 32 b2 ff 4c 8b 23 49 8d 5c 24 10 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 4a 32 b2 ff 48 8b 1b 48 83 c3 30 [ 19.025758][ T298] RSP: 0018:ffff8881deaffcb8 EFLAGS: 00010202 [ 19.031791][ T298] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881de92cec0 [ 19.039729][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881deb9b000 [ 19.047667][ T298] RBP: 0000000000000000 R08: ffffffff821f6354 R09: ffffed103bd5ff1c [ 19.055612][ T298] R10: ffffed103bd5ff1c R11: 0000000000000000 R12: 0000000000000000 [ 19.063556][ T298] R13: dffffc0000000000 R14: ffff8881deb9b000 R15: dffffc0000000000 [ 19.071497][ T298] FS: 00005555567f5300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.080396][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.086948][ T298] CR2: 0000000020000000 CR3: 00000001def89000 CR4: 00000000003406e0 [ 19.094904][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.102982][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.110924][ T298] Call Trace: [ 19.114201][ T298] deactivate_locked_super+0xaf/0x100 [ 19.119558][ T298] incfs_mount_fs+0x70c/0x7d0 [ 19.124212][ T298] legacy_get_tree+0xde/0x170 [ 19.128857][ T298] ? incfs_unlink+0x80/0x80 [ 19.133330][ T298] vfs_get_tree+0x83/0x260 [ 19.137716][ T298] do_mount+0x17be/0x2390 [ 19.142024][ T298] ? copy_mount_options+0xc9/0x300 [ 19.147107][ T298] ksys_mount+0xc2/0xf0 [ 19.151242][ T298] __x64_sys_mount+0xb1/0xc0 [ 19.155796][ T298] do_syscall_64+0xcb/0x1e0 [ 19.160279][ T298] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.166163][ T298] RIP: 0033:0x7f171664e029 [ 19.170557][ T298] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 19.190130][ T298] RSP: 002b:00007ffcf22edd28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 19.198511][ T298] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f171664e029 [ 19.206455][ T298] RDX: 0000000020000200 RSI: 0000000020000300 RDI: 0000000000000000 [ 19.214406][ T298] RBP: 00007f1716612010 R08: 0000000000000000 R09: 0000000000000000 [ 19.222344][ T298] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f17166120a0 [ 19.230342][ T298] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.238302][ T298] Modules linked in: [ 19.242252][ T298] ---[ end trace 26248ca57b250423 ]--- [ 19.247720][ T298] RIP: 0010:incfs_kill_sb+0x47/0xe0 [ 19.252891][ T298] Code: 9e f0 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 68 32 b2 ff 4c 8b 23 49 8d 5c 24 10 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 4a 32 b2 ff 48 8b 1b 48 83 c3 30 [ 19.272500][ T298] RSP: 0018:ffff8881deaffcb8 EFLAGS: 00010202 [ 19.278560][ T298] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881de92cec0 [ 19.286501][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881deb9b000 [ 19.294473][ T298] RBP: 0000000000000000 R08: ffffffff821f6354 R09: ffffed103bd5ff1c [ 19.302434][ T298] R10: ffffed103bd5ff1c R11: 0000000000000000 R12: 0000000000000000 [ 19.310394][ T298] R13: dffffc0000000000 R14: ffff8881deb9b000 R15: dffffc0000000000 [ 19.318358][ T298] FS: 00005555567f5300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.327275][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.333836][ T298] CR2: 0000000020000000 CR3: 00000001def89000 CR4: 00000000003406e0 [ 19.341831][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.349792][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.357878][ T298] Kernel panic - not syncing: Fatal exception [ 19.364171][ T298] Kernel Offset: disabled [ 19.368471][ T298] Rebooting in 86400 seconds..